Text reads "CAUTION BURIED FIBER OPTIC LINE BELOW". Our detectable tapes meet or exceed industry standards. They can be used for location and protection of underground cable and pipe. Our detectable tape is a three-layer design with aluminum foil in the middle and outer layers of plastic. The foil layer allows for inductive and conductive location. The standard print style of black letters and color background create a highly visible permanent message. The aluminum foil alerts excavators of a buried installation below. Pkg of 2